倾斜煤层窄长形露天矿横采内排分期境界优化

发布时间：2018-05-12 15:46

本文选题：窄长形露天矿 + 倾斜煤层　；参考：《煤炭学报》2017年10期

【摘要】：为了使采用横采内排开采程序的倾斜煤层窄长形露天矿开采境界最优化,依据露天开采原理,提出一种分时期优化境界的方法。该方法依据剥离物流向流量的变化,将其矿山工程划分为3个时期,即:全部外排期、部分内排期、全部内排期;通过构建各时期剥、采、排工程位置模型,分析了开采过程中不同时期剥离物流向流量的变化对经济合理剥采比的影响,揭示了经济合理剥采比与内排工作线推进度的关系,构建了各煤、岩层边帮厚度拟合函数,阐释了采用循环判断方式确定剖面最优边帮位置的方法,给出了分期境界优化的原则、适用条件及优化模型。将此方法运用于神新能源黑山露天煤矿,结果表明:经济合理剥采比由8.06 m~3/t逐期增加至10.54 m~3/t,较原设计境界经济可采储量增加44.95 Mt,服务年限增加4.26 a,实现了露天开采经济效益最大化。
[Abstract]:In order to optimize the mining boundary of inclined coal seam with narrow and long open pit mining procedure, according to the principle of open pit mining, a method of optimizing boundary in different periods is put forward. According to the change of stripping material flow, the mine engineering is divided into three periods, that is, the whole outfall period, the partial internal discharge period, the total internal discharge period, and the location model of stripping, mining and discharging engineering in each period. This paper analyzes the influence of the change of stripping material flow in different periods on the rational stripping ratio, reveals the relationship between the economic reasonable stripping ratio and the advancing degree of the inner row working line, and constructs the fitting function of the thickness of each coal and rock stratum. This paper explains the method of determining the optimum side position of the section by cyclic judgment, and gives the principle, applicable conditions and optimization model of the boundary optimization by stages. This method has been applied to the open pit coal mine of Shenzhou New Energy Montenegro. The results show that the reasonable economic stripping ratio is increased from 8.06 mm / 3 / t to 10.54 MN / 3 / t, 44.95 Mt / t and 4.26 aa, respectively, compared with the original design. The maximum economic benefit of open-pit mining is realized.
【作者单位】：辽宁工程技术大学矿业学院;辽宁工程技术大学煤炭资源安全开采与洁净利用工程研究中心;神华新疆能源有限责任公司黑山露天煤矿;
【基金】：国家自然科学基金资助项目(51304104) 辽宁省教育厅基金资助项目(LJYL038) 辽宁省煤炭资源安全开采与洁净利用工程研究中心开放基金资助项目(TU15KF07)
【分类号】：TD824

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